Getting firsthand information from an actual car owner is one sure way to get an idea of car performance once it leaves the lot. Autobytel features real consumer reviews that give the unbiased experience of a car.
I have driven from Dallas to Orlando and back averaging 52 mpg. Another short trip from Houston to Dallas averaging 59 mpg. Overall I get between 52-54 mpg with 90% city and 10% hwy. Extremely pleased with my 2011 Insight LX. My fellow co-workers still can't believe this little Insight can do just as well as a 26K Prius for 6K less.